Home / 28,309.23-42,403.38-21,570.84

Finding the Fourth Proportional to 28,309.23, 42,403.38 and 21,570.84

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Solution

The fourth proportional to 28,309.23, 42,403.38 and 21,570.84 is: 32,310.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.23 : 42,403.38 = 21,570.84 : x
  2. Step 2: Convert to fraction form
    28,309.23/42,403.38 = 21,570.84/x
  3. Step 3: Cross multiply
    28,309.23x = 42,403.38 × 21,570.84
  4. Step 4: Simplify right side
    28,309.23x = 914,676,525.44
  5. Step 5: Solve for x
    x = 914,676,525.44/28,309.23
  6. Step 6: Final answer
    x = 32,310.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.